Pressure generation and responsive mechanism with high viscous fluid

Abstract

A pressure generation and responsive mechanism is provided wherein several blade members bodily movable with a first member is received within a space formed in a second member. The second member provides a first flat end surface in friction engagement with the blade members, and an actuation piston, by itself or in cooperation with the second member, provides a second flat end surface in friction engagement with the other ends of the blade members. Silicon oil is filled within several space sections defined by the first and second flat end surfaces and the blade members. When the first member is moved relative to the second member, the blade members compulsorily displaces the silicon oil within the several space sections against friction resistance with the first and second flat end surfaces. Thus, a pressure is generated within each of the several space sections to actuate the actuation piston.

What is claimed is: 
     
       1. A pressure generation and responsive mechanism comprising: a first rotary shaft rotatable about an axis;   a secondary rotary shaft provided in axial alignment with said first rotary shaft and rotatable about said axis;   a cylinder housing secured to one end of said first rotary shaft in coaxial relation with said second rotary shaft and having a first end surface transverse to said axis;   a piston member received in said cylinder housing to be axially movable but non-rotatable relative to said cylinder housing and having a second end surface facing said first end surface in order to define a cylindrical space having a predetermined width in the direction of said axis;   a rotor drivingly rotatable by said second rotary shaft and disposed within said space, said rotor having at least two blades having a thickness substantially equal to the width of said space in order to define at least two closed space sections partitioned in a circumferential direction, between said first and second end surfaces; and   a high viscous fluid filled within said at least two closed space sections for generating a pressure when compulsorily displaced by said at least two blades against its viscosity, said pressure serving to axially move said piston member.   
     
     
       2. A pressure generation and responsive mechanism as set forth in claim 1, wherein said rotor has a disk-like shape and is formed with at least two sector through holes which are circumferentially partitioned by said at least two blades.   
     
     
       3. A pressure generation and responsive mechanism as set forth in claim 1, wherein said rotor includes: said at least two blades extending in radial outward direction at diametrically opposite sides of said rotor; and   a pair of sector partition walls respectively bridging said at least two blades at an axial mid portion of said rotor in the circumferential direction of said rotor, each of said sector partition walls having a uniform axial width which is thinner than said blades so as to provide a sector space between itself and one of said first and second end surfaces facing thereto.   
     
     
       4. A pressure generation and responsive mechanism as set forth in claim 1, wherein said rotor includes: said at least two blades extending in radial outward direction at diametrically opposite sides of said rotor; and   a pair of sector partition walls respectively bridging said at least two blades at an axial mid portion of said rotor in the circumferential direction of said rotor, each of said sector partition walls having an axial cross section which gradually becomes thinner towards its mid point in the circumferential direction.